Prison

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 A prison (from Old French prisoun) is a place in which people are physically confined and, usually, deprived of a range of personal freedoms. Other terms are penitentiary, correctional facility, and gaol (or jail), although in the United States "jail" and "prison" usually refer to different subtypes of correctional facility. Jails are conventionally institutions which form part of the criminal justice system of a county and house both inmates awaiting trial and convicted misdemeanants. Prisons form part of the criminal justice system of a state and only house convicted felons, usually for longer periods of time than jails. (The U.S. federal government also has a system of jails and prisons). Imprisonment or incarceration is a legal penalty that may be imposed by the state for the commission of a crime.

A criminal suspect who has been charged with or is likely to be charged with criminal offense may be held on remand in prison if he is denied or unable to meet conditions of bail, or is unable or unwilling to post bail. A criminal defendant may also be held in prison while awaiting trial or a trial verdict. If found guilty, a defendant will be convicted and may receive a custodial sentence requiring imprisonment.

As well as convicted or suspected criminals, prisons may be used for internment of those not charged with a crime. Prisons may also be used as a tool of political repression to detain political prisoners, prisoners of conscience, and "enemies of the state", particularly by authoritarian regimes. In times of war or conflict, prisoners of war may also be detained in prisons. A prison system is the organizational arrangement of the provision and operation of prisons, and depending on their nature, may invoke a corrections system. Although people have been imprisoned throughout history, they have also regularly been able to perform prison escapes.

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Prisons are normally surrounded by fencing, walls, earthworks, geographical features, or other barriers to prevent escape. Multiple barriers, concertina wire, electrified fencing, secured and defensible main gates, armed guard towers, lighting, motion sensors, dogs and roving patrols may all also be present depending on the level of security. Remotely controlled doors, CCTV monitoring, alarms, cages, restraints, nonlethal and lethal weapons, riot-control gear and physical segregation of units and prisoners may all also be present within a prison to monitor and control the movement and activity of prisoners within the facility.

Modern prison designs have sought to increasingly restrict and control the movement of prisoners throughout the facility while permitting a maximal degree of direct monitoring by a smaller corrections staff. As compared to traditional large landing-cellblock designs which were inherited from the 19th century and which permitted only intermittent observation of prisoners, many newer prisons are designed in a decentralized "podular" layout. Smaller, separate and self-contained housing units known as "pods" or "modules" are designed to hold between sixteen and fifty prisoners each and are arranged around exercise yards or support facilities in a decentralized "campus" pattern. A small number of corrections officers, sometimes a single officer, is assigned to supervise each pod. The pods contain tiers of cells arranged around a central control station or desk from which a single officer can monitor all of the cells and the entire pod, control cell doors and communicate with the rest of the prison. Pods may be designed for high-security "indirect-supervision", in which officers in segregated and sealed control booths monitor smaller numbers of prisoners confined to their cells. An alternative is "direct-supervision", in which officers work within the pod and directly interact with and supervise prisoners, who may spend the day outside their cells in a central "dayroom" on the floor of the pod. Movement in or out of the pod to and from exercise yards, work assignments or medical appointments can be restricted to individual pods at designated times and is generally centrally controlled. Goods and services, such as meals, laundry, commissary, educational materials, religious services and medical care can increasingly be brought to individual pods or cells as well. Despite these design innovations, overcrowding at many prisons, particularly in the U.S., has resulted in a contrary trend, as many prisons are forced to house large numbers of prisoners, often hundreds at a time, in gymnasiums or other large buildings that have been converted into massive open dormitories. Lower-security prisons are often designed with less restrictive features, confining prisoners at night in smaller locked dormitories or even cottage or cabin-like housing while permitting them freer movement around the grounds to work or activities during the day.

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Rehabilitation

Meta-analysis of previous studies shows that prison sentences do not reduce future offenses, when compared to non-residential sanctions] This meta-analysis of one hundred separate studies found that post-release offenses were around 7% higher after imprisonment compared with non-residential sanctions, at statistically significant levels. Another meta-analysis of 101 separate tests of the impact of prison on crime found a 3% increase in offending after imprisonment. Longer periods of time in prison make outcomes worse, not better; offending increases by around 3% as prison sentences increase in length.

Effective rehabilitation programs reduce the likelihood of re-offense and recidivism] Effective programs are characterised by three things: first, they provide more hours for people with known offense risk factors (the Risk Principle); secondly, they address problems and needs that have a proven causal link to offending (the Needs Principle); and thirdly, they use cognitive-behavioural approaches to behaviour modification (the Responsivity Principle). Providing rehabilitation to people at lower risk of reoffending results in a 3% reduction in reoffending, while providing rehabilitation to people with a high risk of reoffending is three times as effective, resulting in a 10% reduction in subsequent offending. Risk factors for reoffending are: age at first offense, number of prior offenses, level of family and personal problems in childhood and other historical factors, along with level of current needs related to offending. Those individuals who had many personal and family problems in childhood (particularly 19 or more), started offending before puberty, and have committed multiple priors are more likely to reoffend in future, according to longitudinal studies internationally.

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In support of the Needs Principle, programs that specifically target criminogenic needs (causal needs and problems), see a 19% reduction in reoffending] In support of the Responsivity Principle, there is a 23% reduction in reoffending after participating in programs that use cognitive-behavioural methods to bring about changes in behaviour, thinking, and relationships] When all three principles are effectively applied, the impact on offending is a 26–32% reduction] compared to a 3–7% increase in offending found with imprisonment alone.

Residential approaches—whether in prison or some other live-in option—tend to be less effective than non-residential approaches. These researchers found that effective programs delivered in the community were followed by a 35% reduction in reoffending, whereas effective programs delivered in residential settings (such as prisons and halfway houses) were followed by a 17% reduction in reoffending. One very likely reason for this is that for teens and adults, mixing with antisocial peers increases the risk of offending. In prison or residences inmates spend a great deal of time with other people immersed in criminal pursuits and beliefs, whereas in community-based programs there is more opportunity to mix with people involved in constructive, law-abiding activities. Antisocial peers in prisons and residences can form a very powerful pressure group, subtly and not so subtly influencing the behavior of other inmates.

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Resocialization

Resocialization is a sociological concept dealing with the process of mentally and emotionally "re-training" a person so that he or she can operate in an environment other than that which he or she is accustomed to. Resocialization into a total institution involves a complete change of personality. Key examples include the process of resocializing new recruits into the military so that they can operate as soldiers (or, in other words, as members of a cohesive unit) and the reverse process, in which those who have become accustomed to such roles return to society after military.